245/40/18 on a 8.5 inch rim? - RX7Club.com

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245/40/18 on a 8.5 inch rim?

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Old 03-16-06, 07:58 PM   #1
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245/40/18 on a 8.5 inch rim?

hey there guys and gals, i need to know if a 245 will fit the 8.5 inch wide wheel perfectly? i dont want it to look stretched and dont want it to look like the tire is to big for the rim. will it fit? thank you.
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Old 03-16-06, 08:41 PM   #2
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245/35 18 is the correct tire size, not 245/40 18

A 245/35 18 will fit fine on an 8.5" wheel.
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Old 03-16-06, 08:53 PM   #3
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what about a 235/40/18? will it look stretched?
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Old 03-16-06, 08:57 PM   #4
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there is probly no way a 225 is fitting on an 8.5 inch wheel huh? that will be stretched way out i bet.
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Old 03-16-06, 10:16 PM   #5
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Quote:
Originally Posted by rynberg
245/35 18 is the correct tire size, not 245/40 18

A 245/35 18 will fit fine on an 8.5" wheel.

dude, how do you know all these sizes? do you have like a chart or something loll.....
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Old 03-16-06, 10:31 PM   #6
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Quote:
Originally Posted by rotaryracer1
what about a 235/40/18? will it look stretched?
A 235/40 is actually a perfect fitment width wise and, depending on the tire, will likely match up with the edge of the rim. 225/40 would be a little stretched.

Quote:
Originally Posted by RxSeven1
dude, how do you know all these sizes? do you have like a chart or something loll.....
1. There's really not that many sizes that fit properly on an FD, so it's not that big a deal.
2. I have a mind for numbers....just don't send me to the grocery store for three things without a list. I'd be lucky to remember two of the items...
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Old 03-19-06, 02:24 PM   #7
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can you fit a 245 on a 9.5 inch wheel?
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Old 03-20-06, 08:26 PM   #8
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I know theres a chance that this may not apply, but on my STI 8.5 inch stock rim, people are fitting as large as 275 tires with it looking only a tad weird, and running 255s daily with no issue. A rim is a rim, or so I think.
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Old 03-20-06, 10:01 PM   #9
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Quote:
Originally Posted by js3324
I know theres a chance that this may not apply, but on my STI 8.5 inch stock rim, people are fitting as large as 275 tires with it looking only a tad weird, and running 255s daily with no issue. A rim is a rim, or so I think.
Wrong. Just because some people have physically done it, doesn't mean it's not stupid or poor fitment. It also depends on the aspect ratio of the tire. SUVs may run 275/60s on an 8-inch rim with no issue, for example.
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Old 03-23-06, 01:13 PM   #10
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The section width (sidewall to sidewall) of a 235/40R18 on an 8.5" rim is 9.5" That is the recommended wheel width of that tire size. A 255/35R18 will fit on an 8.5" rim but it would be stretched a bit. 9" would be a better fit. The 255/35R18 is also about 1/2" shorter than the 235/40R18. It is closer to stock 225/50R16 height.
Quote:
Originally Posted by rotaryracer1
can you fit a 245 on a 9.5 inch wheel?
A 245/40R18 would max out on a 9.5" That is also about 1/3" taller than a 235/40R18 and almost 1" taller than stock.
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Old 01-12-07, 06:35 PM   #11
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How about a 275/40/18 on a 18x9 wheel?
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Old 01-17-07, 12:11 AM   #12
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275/40/18 i think is too tall for fd i know 265/35/18 fits on a 9.5 wide rim
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Old 01-17-07, 11:50 AM   #13
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Many tire manfs allow for a 9" rim with 275/35 18s..... 275/40 18 would be way too tall.
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Old 01-21-07, 03:40 AM   #14
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ok... Say I have 255/40s in the back and 235/40s in the front. Rim width is unknown, but theyre 17's if that helps. I would be able to get away with running 245/40s all around, right?
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Old 01-21-07, 08:05 PM   #15
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The correct size in 17s would be 235/45, not 235/40. Are the rims identical width? If not, I don't know why you would want to go with skinnier tires at the rear than you have.
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Old 01-21-07, 10:23 PM   #16
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Because my tires are dead and I can get a set of Potenza RE010's for dirt dirt cheap in that size.
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Old 01-22-07, 10:42 PM   #17
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http://www.yokohamatire.com/utrimwidth.asp

for everyone tha needs to know... i was about to make a new thread on this.. but.. oh well, something i found looking for tires.
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